The first thing I could think of you having this problems deals with your internet connection do you have dial-up because when I use to have dial-up my computer would do the same when I downloaded things it takes forever and cuts in and out because it's buffering.

If you have dial-up you should really get cable its really nice, you be suprised how much more you'll use your computer. I just got it a few months ago so I know what it feels like to still have dial-up.

Well I hope this helps you; GOOD LUCK